-
Senior Member
registered user
Wanted: Bash program idea, or application suggestion
.
I would like to create a small bash program that would
monitor my keystroke activity and if no keystrokes are noted
within a fixed small time, then any currently active
internet connection would be disconnected.
I currently use a Knoppix LiveUSB and wifi via a broadband router
with network connections handled by NetworkManager.
If there's 'an app for this' already, then that might also serve.
Thanks in advance.
-
Senior Member
registered user
Hi utu, I do not have a bash script for you, but I have got some suggestions. First of all, you can disable and enable the network from the commandline by using the commands
Code:
nmcli networking off
and
Code:
nmcli networking on
I think the task is similar to a screensaver because in both cases user inactivity starts a process. I read about a user who wanted to download torrents while the screensaver is active. His or her solution was to ask dbus whether the screensaver was active. He or she used the Gnomedesktop environment. Later I read the solution has to be modified if KDE is used instead of Gnome. Since xscreensaver does not seem to use dbus I think you should try to find out if power management provides an interface to run one shell script on times of user inactivity and another if the user is active again. The absence of keyboard events should start a bash script, but what about mouse events? How long is a 'small time'? Do you intend to reconnect to the network if there is any keystroke activity again?
-
Senior Member
registered user
.
Thanks for your responses, klaus2008.
nmcli is probably part of the solution; I'll study up on that.
I should have indicated keyboard and/or mouse events as an indication or
lack of user presence or attention to internet events.
I think 'a small time' might be some random number between 15 and 30 minutes
as a starting point.
If I know I'm not going to use Knoppix for a while, I manually disconnect.
If I'm interrupted, I might forget to do this; I'd like Linux to disconnect
automatically, if need be. Solution need not consider re-connect, since that's
easy enough to do manually with the NM panel applet.
You can't underestimate my programming prowess. At most I may be able to
figure out a line of bash script. I wouldn't have a prayer with C/C+/or C++
source, even if I had it to look at.
-
Senior Member
registered user
.
Two other building blocks seem to be
Code:
xscreensaver-command -watch
and the following perl program, which tracks the output of the -watch command
and reacts accordingly:
Code:
#!/usr/bin/perl
my $blanked = 0;
open (IN, "xscreensaver-command -watch |");
while (<IN>) {
if (m/^(BLANK|LOCK)/) {
if (!$blanked) {
# **** action to take when screensaver starts ****
$blanked = 1;
}
} elsif (m/^UNBLANK/) {
# **** action (if any) to take when screensaver is reset ****
$blanked = 0;
}
}
I don't think perl should be necessary, and there is probably a simpler
bash equivalent that would suffice.
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
Dell EMC NX3230 Server
$599.99
DELL PowerEdge R730XD 24x 2.5" Server Dual 750W Dual Heatsink - BareBones TESTED
$269.99
Supermicro 4U 36 Bay Storage Server 2.4Ghz 8-C 128GB 1x1280W Rails TrueNAS ZFS
$721.06
CSE-118 Supermicro 1U GPU Server 2.6Ghz 28-C 128GB 2x Nvidia K40 GPU 2x1600W PSU
$580.03
Intel Xeon E5-2680 v4 2.4GHz 35MB 14-Core 120W LGA2011-3 SR2N7
$17.99
Intel Xeon Gold 6140 SR3AX 2.3GHz 18-Core Processor CPU
$44.99
Intel Xeon E5-2697 v2 2.7GHz 30M 12-Core LGA2011 CPU Processor SR19H
$27.99
HP Z4G4 Intel Xeon W2133-3.6 GHz, 256 NVME, 6TB HDD, 32GB RAM P620 NO OS
$265.00
DELL PowerEdge R730 Server 2x E5-2690v3 2.6GHz =24 Cores 32GB H730 4xRJ45
$274.00
Dell Precision 3450, 256GB 32GB RAM, Xeon W-1250, Comet Lake GT2, W10H, Grade B+
$262.99